Note 3 - Major Customers and Suppliers	12 Months Ended
Dec. 31, 2022
Notes to Financial Statements
Major Customers and Suppliers Disclosure [Text Block]	(3) MAJOR CUSTOMERS AND SUPPLIERS: Our revenues are derived primarily from chemical supply and pharmaceutical companies located primarily in the United States. In 2022, three major customers accounted for 68% of total revenues. Accounts receivable balances for these major customers represent 19% of total accounts receivable at December 31, 2022. Accounts receivable balances for three customers accounted for 94% of total accounts receivable at December 31, 2022. In 2021, four major customers accounted for 73% of total revenues. Accounts receivable balances for these major customers represent 94% of total accounts receivable at December 31, 2021. Substantially all inventory purchases were from three vendors in 2022 and 2021. These vendors are located primarily outside the United States. We have three sources for our Aquaplex® products. There are multiple sources for our Trappsol® products. For the year ended December 31, 2022, the product mix of our revenues consisted of 99% basic natural and chemically modified cyclodextrins and 1% cyclodextrin complexes. For the year ended December 31, 2021, the product mix of our revenues consisted of 88% basic natural and chemically modified cyclodextrins and 12% cyclodextrin complexes.

Note 3 - Major Customers and Suppliers

12 Months Ended

Dec. 31, 2022

Major Customers and Suppliers Disclosure [Text Block]

(3) MAJOR CUSTOMERS AND SUPPLIERS:

Our revenues are derived primarily from chemical supply and pharmaceutical companies located primarily in the United States. In 2022, three major customers accounted for 68% of total revenues. Accounts receivable balances for these major customers represent 19% of total accounts receivable at December 31, 2022. Accounts receivable balances for three customers accounted for 94% of total accounts receivable at December 31, 2022. In 2021, four major customers accounted for 73% of total revenues. Accounts receivable balances for these major customers represent 94% of total accounts receivable at December 31, 2021.

Substantially all inventory purchases were from three vendors in 2022 and 2021. These vendors are located primarily outside the United States.

We have three sources for our Aquaplex® products. There are multiple sources for our Trappsol® products.

For the year ended December 31, 2022, the product mix of our revenues consisted of 99% basic natural and chemically modified cyclodextrins and 1% cyclodextrin complexes. For the year ended December 31, 2021, the product mix of our revenues consisted of 88% basic natural and chemically modified cyclodextrins and 12% cyclodextrin complexes.